Mutant bacteria + polyester = more biofuel

Brewing a certain type of biofuel with a mutant bacteria and polyester could double the fuel's production, researchers have found.

The biofuel, butanol, is a type of alcohol that is mainly used as a solvent, or in industrial processes that make other chemicals. But researchers think it has potential as a biofuel that could one day replace gasoline.

Butanol would produce more energy than another type of alcohol alternative fuel, ethanol.